Stud-threading machine.



0. A. SMITH. sTuD THREADING MACHINE.

K APPLICATION FILED APR. 22. I9I4.

(LA. SMITH.

STUD THREADING MACHINE. APPLICATION FILED APR. 22. I9I4.

Patented sept. 14, 1915.

5 SHEETS-SHEET 2.

IN In..

0. A. SMITH.

STUD THREADING MACHINE.

APPLICATION FILED APR 22 I9I4 Patented Sept. 14, 1915.

5 SHEETS-SHEET 3.

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0- A- SMITH.

STUDITHREADING MACHINE. APPLICATION FILED APR. 22, 19I4.

Patented sept. y14, 1915.

5 SHEETS-SHEET 4.

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0. A. SMITH.

STUD THREADING MACHINE. APPLICATION FILED APR. 22-l |914.

Patented sept. 14,1915.

5 SHEETS-SHET 5.

OSCAR A. SMITH, 0F CLEVELAND, OHIO, ASSIGNOR TO THE NATIONAL-ACME MANUFAC- TUBING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

' STUD-THREADING MACHINE.

Specification of Letters Patent. Patented Sept. 141:, 11915..

Application led April 22, 1914. Serial No. 833,589.

T0 aZl wh-om it may concern Be it known that I, OSCAR A. SMITH, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and. useful Improvements in Stud-Threading Machines, of which the following is a specification.

This invention relates to metal working machines, and more particularly relates to stud threading machines, the object of the invention being to provide an improved machine of this class in which the work spindle carrying the work is held stationary while the threading tool is rotated, so that there is no tendency to clog or wind the pieces in thework spindle.

A further object is the provision of an improved machine of the character specifiedv in which thework is fed to the work spindle at the side thereof.

A further object of the invention is the provision of an improved machine of the class specified in which, in combination with :1 nonrotating work spindle and a rotating working tool, automatic means is provided for feeding the work at the side of the work spindle, and in combination with these several elements improved mechanisms are provided whereby the several elements are rendered highly efficient to perform the work for which they are designed, so that a uniform lead, accurate pitch and a smooth clean thread are obtained and liability to strip the threads on the backing off of the die prevented.

In the drawings accompanying and forming part of this specification, Figure 1 is a vside view of this improved machine; Fig. 2

is a top plan View thereof; Fig. 8 is a detail perspective view of a part of the machine adjacent to the magazine; Fig. 4 is a crosssectional view of the magazine taken in line 4 4, Fig. 3; Fig. 5 is a vertical sectional view of the magazine; Fig. 6 is a detail view of the slotted work holding tube within the stationary or dead spindle; Fig. 7 is a perspective side view of one end of the machine looking at the rear of the magazine; Fig. 8 is a perspective side view of the opposite end of the machine looking at the rear of the magazine; Fig. 9 is a sectional detail view of the stud or work feeding means; and Figs. 10, 11 and 12 are views illustrating the manner' of feeding a blank or stud to the dead spindle.

Similar characters of reference indicate corresponding parts inthe several figures of the drawings.

This improved stud threading machine comprises in a general way` a stationary or dead work spindle open at the side thereof, means for automatically feeding successive studs or blanks tothe spindle at the side thereof, means for pushing the work forward into position to be threaded, stopping means for determining the correct position of the work, and rotary threading means for threading the work, in combination with the necessary 'mechanisms for operating the several operating parts.

0n a suitable pan l and legs 2 is bolted the bed 3, having at one end a raised portion 4. Gibbed to the bed is a slide 5, on which is mounted the rotary threading tool 6 and its spindle 6. rfhis slide is shifted back and forth by means of a depending stud and roller 7 carried by a slide pusher plate 106 adj ustably secured to the slide in the manner hereinafter described, and this roller 7 is in engagement with a cam on a cam-drum 8 carried byv a cam shaft 9 mounted below the i This cam shaft is bed of the machine. driven by means of a worm wheel 10 fixed to the shaft, which wheel is in engagement with a worm 11 mounted on a cross shaft 12, and which cross shaft is driven through a suitable series of change gears 13, a sprocket wheel 14, sprocket chain 15, sprocket wheel 16 carried by a cross shaft 17 having a. spiral gear 18 in engagement with a similar-formed gear 19 carried by the driving pulley shaft 20. on which is the driving pulley 21 belted to any suitable source of power, (see Figs. 1, 2 and 8). From this same driving pulley 21, by means of a set of ychange spur gears 22, one of which, as 23, is secured to a shaft 24, (see-Figs. 1 and 8), and a set of gears 25 and 26, one of which, as 25, is keyed by a key and keyway to the shaft 24 and the other, as 26, is keyed by a key and keyway to the rotary tool spindle 6, the threading tool is rotated, the keying of these gears 25 and 26 permitting the sliding back and forth movement of the tool slide and also movement of the tool spindle in `its -support without interfering with the encrease the size of the spur gear 22, which is supported in such a way that it may be shifted to accommodate an increased or decreased diameter of gear.

The oil system of the machine is controlled by a sprocket and sprocket chain 31, the,4 sprocket being located on the cross shaft 17.

' Housed on the raised pprtion 4 of the bed of the machine is the dead or non-rotating work spindle 32 in alinement with the threading spindle 6, one side of this dead s indle being cut away, as at 33, (see Fig. This work spindle is rigidly held in position on the raised portion of the bed by a clamp cap 34. Mounted on the raised portion 4 of the bed, parallel with the work spindle 32, at a suitable distance from it,

is` the magazine 35, the cut away portion of thework spindle being directly'in front of the magazine to allow the proper feeding of the blanks from the magazine into the spin- .'dle. The magazine comprises a supporting 'plate' or back 36, to which are bolted guide plates 37 laterally adjustable for different .lengths of work by means of slots 38 and bolts 39. At the base and in rear of the magazine back, and supported by bearing rods 40 housed in a U-shaped bracket 41, is a feed slide 42 in which is mounted an adjustable feed plate 43, and this slide is operated by suitable cams on a cam-drum 44, (see Fig. 1l by means of suitable lever mechanism 45,

adetail description of `which is unnecessary since it may be similar to that shown and described in my Patent No. 1,056,066 dated March- 18, 1913, for operating the slide of that magazine, and this lever mechanism is so organized that in the event of the blanks becoming jammed or clogged there will be an automatic release of one part of the lever mechanism from the other, thereby to interfere with the further operation of this part bof the machine, and a detailed description ofthis is also' unnecessary since it may be similar to that shown and described in the same patent. The adjustable feed plate 43 may be changed to accommodate the different diameters of studs or work, and is so located as to bear upon the stud slightly above the center line thereof to thus avoid any tendency to lift up the blank. By means of the mechanism described the feed plate pushes the lowest stud blank inthe magathe diameter of the blank to be threaded. l The chuck 62'is a standard Acme push spring chuck held in a chuck hood 63, for which purpose the work spindle is threaded at its end. As stated, the work receiving tube 60 within the stationary workispindle is interchangeable with others to correspond with the size of work to be threaded.

For the purpose of closing the spring work chuck and for feeding the blanks forward after they have been received within the Work spindle, suitable mechanism is provided and comprises a push tube 64, the forward end of which is adapted to engage the rear end of the interchangeable receiving tube 60, the forward end of which receiving tube copeiates with the spring members of the spring chuck, and this push tube 64 is operated by means of pivoted fingers 65 having roller bearings 66 at the ends thereof coperating with a sliding clutch cone or wedge 67 shifted by a yoke 68 pivot- Ially mounted on the bed of the machine and having a depending lever operated by a cam on a cam-drum 69, (see Fig. 1). A feed or push rod 70 is located centrally of the. push tube 64. For operating.,r this feed rod a feed slide 71 is provided. This feed slide is mounted on a pair of parallel bearing rods 72 and 73, the inner ends of which are supported by the raised part 4 of the bed and the outer ends by an L-shaped bracket 74, and to this feet slide is secured by means of a' projecting arm 75 a rod 76 parallel with the pusher rod, which rod 76 in turn is connected by an arm 77 with the pusher rod, this arm 77 being adjustable on the .rod 7 On the movement of th slide back and forth the pusher rod will be reciprocated. The underside of the feed slide 71 is provided with a suitable rack 78. which is iu mesh with a pinion 79 carried by an auxiliary slide 80, and this pinion 79 is also in mesh with an auxiliary rack 81 mounted on the bed of the machine and an extended portion of this auxiliary slide carries a stud and roller, (not shown), which comes iu contact at a predetermined time with suitable cams 82 on a cam-drum 83- For ositioning the work to be threaded, a suita le stop 90 is provided, carried by a short shaft 91, carried by brackets 92 mounted on the bed of the machine to one side of the work and threading spindles, and

this stop oscillates back and forth at a predetermined time directly in front of and in line With the center of the Work spindle. For operating the stop, suitable lever mechanism 93 is provided, supported on the bed of the machine and onepart of which carries a stud and roller 94, (see Fig. 1), for engagement with suitable cams carried by cam-drum 44. Directly behind the head of the threading spindle is loosely mounted a cushion collar 100, a detailed description of which is unnecessary herein, since thepurpose of this cushion collar is merely to eliminate the necessity for accurately timing the lead cam and to guard against the mutilation of the thread on the piece being threaded. Suitable mechanism is also provided for opening and closing the threading die, and but a brief description thereof is necessary, for this opening and closing means may correspond in a general way with similar means shown in the patent to Henn, No. 1,005,833, dated october 17, 1911.

For tripping the threading die there is bolted to the threading spindle slide 5 a bracket 101, and in alinement therewith and bolted to an extended portion of the bed 3 of the machine is another bracket 102, and carried by these brackets, for sliding movement relatively thereto, is a shaft 103 in parallel alinement with the threading spindle, this shaft sliding with the slide 5 in bracket 102. On the shaft 103 is adjustf ably mounted a yoke 104 fitting into a groove in the die hood. On this shaft 103 are mounted a trip collar 105 and a closing collar 110, (see Fig. 2). These collars coperate With the bracket 102 during the movement of the threading spindle slide 5 back and forth, thereby to trip the die at the proper times. To trip the die, collar l105 is set to come into contact with the bracket 102 just as the die reaches the required length of thread. This stops the forward travel of the shaft 103 and the yokel 104 carried by this shaft, whereupon the forward travel of the die hood is stopped, while the continued forward movement of the slide brings the die hood into contact with' the cushion collar 100, although the lead of the chasers carries the body of ,the die forward, which vcauses the chasers of the die to become disengaged from the cooperating part of the die and allows the chasers to open, disengaging the thread.

On the underside of slide 5 is machined a suitable groove, in which is housed an adjustable slide pusher plate 106, and it is this pusher plate which carries the stud and roller 7 hereinbefore described, and in this slide pusher plate, at suitable distances apart, is drilled and threaded a series of holes, shown in dotted lines in Fig. 1. A clamp bolt 111 extends through an adjustable block 112, (Figs. 1, 2 and 7), which is slidingly tongued to the top of the slide 5, and this bolt extends through an elongated hole in the slide 5 and into a suitable hole of the series in the slide pusher plate. This adjustable block is adjusted by means of an adjusting screw 113, one end of which is threaded through an adjusting post 114 carried by the 'slide 5, While the other end passes loosely through extended parallel bearings 115 of the adjustable block 112 and through a collar 116 located between the bearings and pinned to the screw. Thus, by loosening the clamp bolt and turning the adjusting screw to the right or left the adjustable block/F112 is moved backward or forward along its tongue to provide adjustment between any two of the series .of holes in the slide pusher plate. To the rear end of the threadin spindle 6 is fastened a spool 117, which is engaged by a crotched lever 118 pivoted to a bracket 119 bolted to the slide 5, and the outer end of this crotched lever is engaged ,I

by an adjustable stop rod 120 held-in a bracket 121 secured to the bed of the machine, and by this means the die is closed at the proper time. Immediately after the die has been opened the slide 5 is carried backward by means of its cam-drum. As the slide is carried backward the collar 110 on the shaft 103 comes into contact with the bracket 102 justas the crotched lever 118` changed for each different size, shape and l pitch of thread. The die head is held rigid, but in the floating head on the rotating threading spindle 6 the cushion collar 100 on the spindle allows the die to be forced back slightly as it engages the end of the blank, which permits the die to take hold with a full tooth, insuring a clean and full first thread. After the die is started the die spindle is rotated only. The slide 5 carrying the spindle 6 is advanced by means of the cam-drum hereinbefore described, but the spindle when cutting travels forward farther than the slide. The advance of the die head is controlled entirely by the pitch of the thread.

The speed of the threading spindle 6 is controlled by change gears 25 and 26 hereinbefore referred to, while the speed of the cam movements is controlled by change adjusting italong its short shaft.

y of the machine is constant and continuous. f

gears 22 hereinbefore referred to. The time for opening the die is controlled by the setting of collar 105 on shaft 102. The length of the feed of the push rod is controlled by setting connecting arm 77 and the stop collars 77 on the push rod, between one of which and the connecting arm 77 is located a cushioning spring 78.v The position of the work limiting stop is determinedTby he movements of the cam shaft are controlled by means of the hand lever 27, and when the members of the clutch which is controlled by this hand lever 27 are engaged the speed The position of the slide o carrying the .threading tool in relation to the lead cam which controls the relation of the die head and the work is adjusted by shifting the clamp bolt 111 into any one of the several holes in the slide pusher plate, or by the finer adjustment of the adjusting screw 113.

In operation, after the blank is fed into the receiving tube60, which, as hereinbefore stated, takes place while the die is cutting the thread on a. blank previously fed to the chuck, it is pushed forward into the .spring chuck by the push rod, the spring members of the spring chuck being pushed forward to grasp it through the medium of the receiving tube, the push tube 64: and the sliding clutch members and the cone 67. If the blanks are short there may be several of them in the receiving tube 60 at one time; but as the last one dropped into the receiving tube is fed forward it pushes the others forward so that they crowd out the one that is in the push chuck and which has just been threaded, allowing it to drop into the pan of the machine, the blank behindI it taking its place in the push chuck ready to be threaded. The tension onv the push chuck is released and it is allowed to expand, thus freeing the previously threaded stud before the blank behind it is pushed forward. This is accomplished by the action of the cam lever 68 in withdrawing the cone or wedge 67 froln beneath the fingers 65, which allows the push tube 61 to be forced back by the spring members and taper of the spring push chuck. The push tube 64, through the mediumfof the receiving tube 60, has a bearing on the inner end of the push chuck, and this push tube 64 also has a bearing on the part 65 of the fingers 65, so that when the fingers 65 are expanded by the wedge they push the push tube forward, crowding the spring chuck into the taper hood thereof and so closing the chuck tight on the blank. After the threaded piece has been pushed from the chuck, the oscillating feed stop 90 is swung into position in front of the chuck so that the unthreaded blank which has yjust pushed the threaded piece from the chuck is fed against the stop and held there until the action of the wedge 67 coperating with fingers 65 and push tube 64: has closed the chuck, which thus grips the blank tightly and holds it through the threading operation. The oscillating stop is withdrawn of course before the `die is advanced to the blank. The blanks in the receiving tube 60 are,.as hereinbefore stated, fed forward by the action of the feed rod 70, the travel of which, as hereinbefore stated, is controlled by setting the adjustable connecting arm 77.

In connection with a part of the main driving mechanism, at 200, is shown in Fig. 2 a safety clutch, which releases the driving mechanism of the machine should any part of the driving mechanism become hung up for any reason, and all that is necessary to again start the machine is to pull the members of this clutch back into place by means of a suitable crank (not shown) provided for that purpose and adaptedto fit over the squared end 201 of the cross shaft 12.

It will be understood that the yvarious details may be more or less modified without departing from the spirit or scope of this improvement. The term spindle as used in the `claims is intended to cover any form of blank holder whatever its shape or construction may be, and the term side as used in the claims is intended to cover the opening wherever located therein between its ends.

I claim as my invention:

1. In a machine of the class described, the combination of a work spindle having an opening at the side thereof, means for pushing a blank into the side of said spindle while a previously fed blank is being operated on, and means for working said blank.

2. In a machine of the class described, the combination of a stationary work spindle having an opening at the sidethereof, means for feeding a blank into the side of said spindle While a previously fed blank is being operated on, and `means for threading said blank.

3. In a machine of the class described, the combination of a dead work-carrying spindle having an opening at the side thereof, and sliding means for pushing a blank into the side of said spindle while a previously fed blank is being operated on.

4. In a machine of the class described, the combination of a stationary work spindle having an openingat the side thereof, means for feeding a blank into the side of said spindle while a previously fed blank is being operated on, and threading means for threading said blank and comprising an openable die rotatable continuously inthe same direction and adapted to be reciprocated toward and from said work spindle.

Maaate s i 5. In a machine of the class described, the combination of a non-rotary work-carrying spindle having an opening at the side thereof, means for feeding a blank into the side of said spindle While a previously fed blank is being operated on, a tool spindle, and means for shifting one of said spindles toward and from the other.

6. ln a machine of the class described, the combination of a non-rotary work-carrying spindle having an opening at the side thereof, means for feeding a blank into the side of said spindle while a previously fed blank.

is being operated on, a tool spindle, means for shifting one of said spindles toward and from the other, and a threading tool carried by said tool spindle.

'7. In a machine of the class described, the Y combination of a non-rotary work-carrying spindle having an opening at the side thereof, means for feeding a blank y'into the side of said spindle While a previously fed blank is being operated on, a tool spindle, means for shifting one of said spindles toward and from the other, an openable die carried by said tool spindle, and means foropening and closing said die.

8. In a machine of the class described, the combination of a dead work-carrying spindle having an opening at the side thereof, whereby said spindle is always in position to receive a blank, means for feeding a blank into the side of said spindle, a live spindle, a

tool carried thereby, and means for reciproeating one of said spindles toward and from the other.

9. In a machine of the class described, the combination of a work-carrying spindle having an opening at the side thereof, means for feeding a blank into the side of said spindle while a previously fed blank is being operated on, a tool-carrying spindle, one of said spindles being non-rotatable, means for rotating the other of said spindles, and means for reciprocating the rotatable spindle toward and from the other.

10. In a machine of the class described, the combination of a stationary work spindle having an opening at the side thereof, whereby said spindle isl always in positionI to receive a blank, means for pushing a blank into the side of said spindle, and means for pushing a blank longitudinally of the work spindle.

11. In a machine of the class described, the combination of a stationary work-carrying spindle having an opening at the side thereof, whereby said spindle is always in position to receive a blank, means for pushing a blank-into the side of said spindle, 'a tool spindle, means for shifting one of said spindles toward and from the other, and vmeans for pushing a blank longitudinally of the work-carrying spindle.

dlehaving an opening at the side thereof whereby said spmdle 1s always in position tio-,receive a blank, and means for pushing a blank into the side of' said spiiidle.

14. In la machine'of the class described, the combination of a stationary work spin- -dle having an opening at the side thereof whereby said spindle is always in position to receive a.. blank, and means for pushing a blank into the side of said spindle and comprising a magazine and automatically operative-means for successively feeding blanks. 15. In a machine of the class described,

- the combination of a work spindle having an opening at the side thereof, and means for automatically engaging a blank above the center line thereofl and feeding the same into the side of said spindle.

16. In a machine of the class described, the combination of a work spindle having an opening at the side thereof, means for automatically engaging a blank above the center line thereof and feeding the same into the side of said spindle, and means for working said blank.

17. In a machine of the class described, the combination with a work spindle having an opening at the side thereof and means for automatically engaging a blank above the center line thereof and feeding the same into the side of said spindle, of means for threading said blank.

18. In a machine of the class described, the combination with a work spindle having an opening at the side thereof and means for automatically engaging a blank above the center line thereof and feeding the same into the side of said spindle, of means for threading said blank and means for reciprocating said threadingmeans toward and from the blank.

19. In a machine of the class described, the combination of a dead work-carrying spindle having an opening at the side thereof, whereby said spindle is always in position to receive a blank, a blank holding magazine adjacent to said opening, means for automatically pushing successive blanks from said magazine into the side of said spindle, means for pushing said blankslongitudinally of the spindle, a tool-carrying of, a blank holding magazine adjacent to f thereof whereby pushing said blanks longitudinally ofthe.

spindle, of a tool-carrying live spindle, means for rotating it, and means for reciprocating said live spindle towardl and from the dead spindle and including a cam and a slide and means for changing the'position of the slide with relationto the cam.

21. In.a machine of the class described, the combination with a dead work-carrying spindle having an opening at the side theresaid opening, means for automatically feeding successive blanks from said magazine into the side of said s indle, and means for pushing said blanks ongitudinally of the spindle, of a tool-carrying live spindle, means for rotating it, and means for reciprocating said live spindle toward and vfrom the dead spindle and including 'a cam and a slide and means for changing the position of the slide with relation to the cam, said lastA means comprisln a push slide having a plurality of openings and a bolt carried by said first slide and adapted to engage in said openings.

22. In a machine of the class described, the combination of a stationary work-carrying spindle having an opening at the side said spindle is always in 'position torecelve a blank, means for pushing a blank into the side of said spindle, a tool-carrying spindle, -means for rotating one of said spindles, means for reciprocating one of said spindles, means for pushing a blank longitudinally of the work-carrying spindle, and a stop member for limiting the position of a blank in the work-carrying spindle.

23. In a machine of the class described, the combination of a stationary work spindle having an opening at the side thereof, whereby said spindle is always in position to receive a blank, means for pushing a blank into the side of said spindle, means for working said blank, means for pushing a blank longitudinally of the work spindle, and a stop .member for limiting the position of a blank in the work carrying spindle.

24. In a machine of the class described, the combination of astationary work spindle having an opening at the side'thereof, whereby said spindle l1s always in position to receive a blank, means for pushing a blank into the side of said spindle, means spindle having an opening at the side thereof, whereby said spindle is always in position to receive a blank, means for pushing a blank into the side of said spindle means or pushing a blank longitudinally of the workcarrying spindle, and a stopI member for limiting the position of a blank in the workcarrying. spindle. 26. In a machine of the class described, the combination of a non-rotary work-carrying spindle having an opening at the side thereof, means for pushing a blank into the side of said spindle while a previously fed blank is being operated on, a-tool spindle, means for shifting one of said spindles toward and fromthe other, means for pushing a blank llongitudinally of the work-carryingspindle, and a stop member for limiting t e position of a blank in the work-carrying spindle.l

y27. -In a machine of the class described, the combination of a dead work-carrying spindle having an opening at the side thereof whereby said -spindle is always in position to receive a blank, means for pushing a blank into the side of said spindle, a live spindle, a tool carried thereby, means for reciprocating one of said spindles toward and from the other, means for Apushing a blank longitudinally of the lwork-carrying spindle, and a stop member for limiting the position of a blank in the work-carrying spindle.

28. In a machine of the class described,

l the combination of a Stationary work-car- 'the shifted blank.

29. Ina machine of the class described, the combination of a stationary work-carrying spindle having an opening at the side thereof, whereby said spindle is always in position to receive a blank, means for pushing a blank into the side of said spindle, ymeans for shifting a blank longitudinally of the spindle, and means for positioning the siifted blank and comprising an oscillatory s op.

30. In a machine of the class' described, the combination of a'stationary work-carrying spindle having an opening at the side thereof,'whereby said spindle is always in position to receive a blank, means for pushing ablank into the side of said spindle, means for shifting a blank longitudinally of l the spindle, means for positioning the shift-v the combination of a stationary work-car? rying spindle having an opening at the side thereof, whereby said spindle is always 1n position to receive a blank, means for push'- ing` a blank intothe side of said spindle, means for shifting a blank longitudinally of ed blank and comprising an oscillatory stop, a threading spindle carrying a threading die, means for rotating said spindle, and means for reciprocating the threading spindle toward and from the work-carrying spindle.

v 32. In a machine of the class described, the combination of a stationary work-carrying spindle having` an opening at the side thereof, whereby said spindle is always in position to receive a blank, means for pushing a blank into the side of said spindle, means for shifting a blank longitudinally of the spindle, means for positioning the shifted blank and comprising an oscillatory stop, a threading spindle carrying a threading die, means for rotating said spindle, means for reciprocating the threading spindle toward and from the work-carrying spindle,

and means for opening and closing said die.

33. ln a machine of the class described, the combination of a dead work-carrying spindle having an opening at the side thereof, a magazine located adjacent thereto, means for successively feeding blanks from said magazine into the side of said spindle, means for pushing the blanks longitudinally of the spindle, a live spindle, means for rotating said live spindle and including change speed mechanism, means for reciprocating said live spindle toward and from the workcarrying spindle and including a cam and a slide and means for varying the relationship between saidcam and slide, means for actuating said cam and including change A' speed mechanism and an overload clutch, an

openablel die carried by Isaidylive spindle, and means for opening and closing said die. 34. In a machine of the class described,

the combination of a spindle, a slide for sup-- porting it, means including a cam for reciprocating said slide, and means for varying the relationship between said slide and'cam and comprising a perforated supplemental slide and means for engaging the perforations of said slide thereby to clamp it in various positions relatively to the main slide.

35. In a machine of the class described, the combination of a spindle, a slide for carrying it, means for reciprocating said slide and including a cam, a supplemental slide having a plurality of, openings and also having a projection adapted to be engaged by said cam, and adjustable means carried by said rst slide for coperating with any of the openings of the supplemental slide thereby to change the relationship of the main slide relatively to the cam.

36. In a machine of the class described, the combination of a work-carrying spindle having an opening at the side thereof, means for feeding blanks into the side of said spindle, and means for pushing the blanks longitudinally of the spindle and including cam mechanism, a push rod and rack and gear mechanism for operating said push rod.

37. ln a machine of the class described, the combination of a work-carrying spindle having an opening at the side thereof, means for feeding blanks into the side of said spindle, and means for pushing the blanks longitudinally of the spindle and including a push rod, .rack and gear mech# anism for operating it, cam mechanism and an adjustable connection between said rack and gear mechanism and said push rod.

38. In a machine of the class described, the combination of a stationary work-carrying spindle having an opening at the side thereof, whereby said spindle is always in position to receive a blank, a receiving tube located in said spindle and also yhaving an opening in the side thereof registering with the opening in said spindle, and means for pushing-a blank into the side of said receiving tube.

39. ln a machine of the class described, the combination of a work-carrying spindle having an opening at the side-thereof, a receiving tube located in said spindle and also having an opening in the side thereof regi'stering with the opening in said spindle, means for feeding a blank into the side of said receiving tubes, means for gripping said blank, and means for pushing said receiving tube longitudinally of the spindle thereby to operate said gripping means.

40. ln a machine of the class described, the combination of a non-rotary work spin- -dle and a tool carrying spindle, means for changeable receiving tubes adapted to be located in said spindle and each having an openmg in the side thereof registering .with

the opening in said spindle, means for feeding al blank into the side of said tube, means for gripping said blank, and means for pushing said tube longitudinally of said work-carrying spindle thereby to operate said gripping means.

42. In a machine of the class described, the combination of a Work-carrying spindle having an opening at the side thereof, a receiving tube located in said spindle and also having an opening in the side thereof registering with the opening in said spindle, means for feeding a blank into the side of said receiving tube, means for pushing a blank longitudinally of said receiving tube, means for gripping said blank, and means for pushing said receiving tube longitudinally of the spindle thereby to operate said gripping means.

43. In a machine-of the class described, the combination of a non-rotary Work-carrying spindle having an opening in the side thereof, interchangeable receiving tubes adapted to be located in said spindle and each having an opening in the side thereof registering `With the opening in said spindle, means for feeding a blank into the side of said tube While a previously fed blank is being operated' on, and means for pushing a blank longitudinally of said receiving tube.

44. In a machine ofthe class described, the combination of a Work-carrying spindle having a'n opening in the side thereof, interchangeable receiving tubes adapted to be V.

located in said spindle and each having an openlngin the side thereof registering with the opening insaid-spindle, means for feeding a blank into the side of said tube, means u for pushing a blank longitudinally of said receiving tube, means for gripping said blank, and means for pushing said tube longitudinally of said Work-carrying spindle thereby to operate said gripping means.

45. In a machine of the class described, the combinationof a Work-carrying spindle having an opeiiing at the side thereof, means for feeding a blank into the side of said spindle, a chuck `carried' by said spindle, means carried Within the spindle for opening and'clos'ing said chuck, and means carried at the'rear ofthe spindle for operating said last means.v p

' 46. In a machine of the class described, the combination of a Work-carrying spindle having an opening at the side thereof, means for feeding a blank into the side of said spindle, a chuck carried by said spindle, means carried within the spindle for opening and closing 4said chuck, means for pushing a blank llongitudinally of the spindle and into the chuck, and means carried at the. rear of the spindle for operating said last means. y

Y 47. In a machine of the class described,

the combination of a Work-carrying spindle having an opening at the side thereof, means for feeding a blank into the side of said spindle, a chuck carried by said spindle, means for opening and closing said chuck, and means for pushing a blank longitudinally of the spindle and into the chuck, said chuck opening and closingl means including a detachable receiving tube having an opening in the side thereof.

48. In a machine of the class described, the combination of a dead Work-carrying spindle having an opening in the side thereof, a chuck carried thereby, means located in said spindle for opening and closing said chuck and including a detachable receiving tube having an opening in the side thereof, means for feeding a blank into the side of said spindle, means for pushing a blank into the chuck, a live spindle, means for reciprocating said live spindle toward and from the dead spindle, means for rotating said live spindle, an openable threading die carriedvby the live spindle, and means for opening and closing said die.

= 49. In a machine of the class described, the combination of a dead Work-carrying spindle having an opening in the side thereof, a chuck carried thereby, means located in'said spindle for opening and closing said chuck and including a detachable receiving tube having an opening in the side thereof, means for feeding a blank into the side of said spindle, means for pushing a blank into the chuck, a live spindle, means for` reciprocating said live spindle toward and from the dead spindle, means for rotating said live spindle, an openable threading die carried by the live spindle, means for opening and closing said die, and a stop shiftable into position to limit the position of the blank in the dead spindle;

50. In a machine of the class described, the combination of a stationary'w'ork-carrying spindle having an opening in fthe Vside thereof, reciprocating means for'- ushing blanks into the side' of said spindile cam mechanism for operating said reciprocating means, means for. shifting the blanks longitudinally of the work spindle, an oscillating stop for limiting the position of the blanks, and cam mechanism for shifting said stop.

51. In a machine of the class described, the combination of a stationary Work-carrying spindle having an opening in the side thereof, means for pushing blanks successively'into 'the side of said spindle, means for pushing the blanks longitudinallyv ofthe spindle, a tool-carrying spindle, means for rotating saidspindle, a cam shaft and means for rotating'. it, and means carried by said shaft for reciprocating said tool spindle and for operating both of said blanlrpshing means.

52. `In a machine of the class described, U0

the combination of a stationary work-carryoperating both of said blank pushing me, 10 ing spindle having an opening in the side a work-llmiting sto ,and means also carried thereof, means for pushlng blanks succesby said cam shaft ttor actuating said Stop. sively into the side of said spindle, means Signed at- Cleveland, in the county of for pushing the blanks longitudinally of the Cuyahoga, this 18th da of April 1914. spindle, a tool-carrying spindle, means for OSYC A. MITH. rotating said spindle, a cam shaft and means Witnesses:

for rotating it, means carried by said shaft F. E. Borcn, for reciprocating said tool spindle and.` for W. L. BAKELAR. 

